Celebs are raising money and awareness for Lou Gehrig’s disease with the Ice Bucket Challenge. It involves dumping a bucket of ice water on your head and challenging someone to do the same or make a donation to ALSA.org.

Justin Bieber, Selena Gomez, Taylor Swift, Chris Pratt from Guardians of the Galaxy and more have done it. Watch them below, join in and challenge someone today!

Justin Bieber

Selena Gomez

Taylor Swift

Chris Pratt from Guardians of the Galaxy